Loop forming and cutting device



April 25, 1933. J. H. HOWE 1,905,637

LOOP FORMING AND CUTTING DEVICE Filed Dec. :51, 1931 2 Sheets-Sheet 1 April 25, 19 33. J HOWE LOOP FORMING AND CUTTING DEVICE 2 Sheets-Sheet 2 Filed Dec. 31, 1951 coefl 3 7 to providenawdevice of simple eonstruction with i fabric.

l "alienlx-atl Apr. 25, I933 v aroHN'HUD-somHo E, on sourH: on men, NEW-JEBSEY IzOOP FOEMENG AND CUTTING IDEVIGE Application filed= December 3 1',- 193 1; gerial li 9, 1 584,260.

J This invention relates to; devices; for the inFig, 3, looking at the sjanie'fro m ther'ight formingandthe cuttingof-loopsin relation-thereof; j' if"? The device of {the invention ;Fig.'.5 is' asegtionalvievv'al0ng 1line -5 is capable of many uses, one ofwhiehis the f Fig l; g 1

making of hooked rugs. V Fig. 6 is a detail view of the cuttingjd evioe Theprincipal. object of: the invention is assembly; a v

i d :Fig. 7 is a View of the assen bly'illusltra ted andhaving:ifeaturesiwhichzadapt it to perin Fig.6 efromthe rightjside thereofi" '1' easily operab le'by any: one;

- essentially aupair ofurelatively 7 movable V supform its i intended: function i very efficiently.

a Fig. '8 is a vplanvievvof the a ssem b ly of Thedevi'ce isalso so-constructed'that it is ,Fig. 6;.and I Fig. 9 is a detail view of .the'cutting device The device? of "the: inventioneomprises .removed friom its asseinbly;

' Beferring particularly; to F of porting members, one ofvwhich earries a theidraivingsnand especially to ig,f3 vvhere stationaryneedleandktheother.ofwhich carh d vi e is shown in section tliedevice as 'ries an oscillatory. loop? iormer'; The device illus a e compri es e nt ally a suppge ing also includes vsuitablemeans for oseillating m'mb le g l lgn 'ii lly y jyfgign e the loopiformer inproperrelation to thelnee-ar l1a ,& 1 a stationary 1 needleZf rried dle during relative movementof the sup-thereby, a: second supportingnneinheij3icoporting members. The loop holderywhen ac Qp 1Y ylils oclatgd, WIthISJQPPQ IZEH g gfiem; tuated by-said means. isluadaptedioq-pi ck ups-$ l SQ- 1 Inqvahle feliltlyelytheretog astitch taken-bythe needle andzfiorxn a-lo0p nd an osclllatory or p votjed floopformer 4: while'the needle takes the next; stitch. A Lrrld by?s 1 pp0 tingn1e ber 3:1 Suppprb' further feature 'ofthe device-resides in the lug memberl preferably,comprisesafvvogden provision ofa' cutting device: which is re---ha-ndle 5 and'aupair'i f meta icip ate siliently supported-in cooperativeLrelation to W l 'Q i l 7 at iac dviilgsbaoed 'relation to the loopformerandis adjustable into operac hh2 11I ld1efin any suitable fmannerfisuehffor tive or inoperativepositionxdepending upon ex m leg asby niean Oflsfif vvs afs'liljlustr ated.

of forming vsuccessiveloops;

lookingat- :the

' :Fig. 3 1s a: sectional viewgthrOugh the eenscribed hereinafter, passesvvhen'in opeiation. ter of the device or-a1 ngline- 3+e3;0fi;Fig. i a 1' E 4,*the:cutting element being-illustrated in; and'p'rojvidedvvith a pair of etainerl OPGIfl-tlVGPOSltlOII; i

whether or not the; particular aoperator de-,-, l 1SfIf l B fi gf ,,I l 2 s aga "sires to cut the loops formed bywthe -lOOpwr JiPPGLl p art f le 5 di po ed x former.

I between; and ena ted; to, the: a fiai allel iside f "Qtherobjects and featuresofconstruction Walls 6 and e ellsrpr vlde' Wlth "ofthe' device will beapp'arent hereinafter. 1 an $33? P nl 5811951 P nt d l d thf Ollgh The following detailed description wilk af-"- fgwhlchl v i ie-P S e "The. ief 19 s so longitudinal openingthrough theyarn may readily. pass; has; shown ,inore learly in 1 I i g n a Fiv. 3. Thelneedl eis also 'forined wimp-amt. .F -c i l fl FW of h lel extendingledges, 9sonflhothsides'sogthatit i h t g devlce m trconstimtes apair of channels throu hvvhich P05111011 a lnustratmglclea'fly thgmanneri Ltheliobp formal and, yarn pass in titration, a y fi aslvvillb'einokeielarl @T'aient iigialfter. Flg. 2 1s a view ofthe. devlce O f..FI g. 1, loopfo l fl f zil l vfi d:

same ...fr0m the :right slcle umme ,edg sgloztqierm' thereof;

i forcl-"a complete" understanding of a re-j'" Qim dJt Y '5 m se w bs lenfia y ferred embodimentfof the invention as il1ustrated on the accompanyingdravvings.

. provide apresser foot portion whose purlaterally. extending Supporting member 3 comprises a supporting block 12 having a laterally extending handle 13and' parallel guidearms 18 and 19 (see Fig; 5) securely attached thereto. Supporting block 12 is positi ned in the spacebe pose will be clearly apparent hereinafter.

' 2,6 The widened channel wallsthusserve a dual purpose.

' Supporting block bolt 21, which in turn 22 upon which the loop formcarries an ,ear

for pivotal action, the widened er is mounted channel walls of the loop former being pivotally'attached to the ear, Spaced cam follower members 23' and 24 are securely attached to the loop former,as illustrated in Fig. 3, and are adapted for engagement by the cam-likeends of a leaf spring 25 which is securely attached to handle 5. The ends of ably carried between forth in detail hereinafter.

. this spring are bent as illustrated to protrude into the space between walls 6'and 7 so as to constitutethe desired cam surfaces for actu atingthe loopfformer in a manner to be set Suitable screws 26' and 27 may extend through handle 5 so as to engagethe upper and lower ends of spring 25 and serve as supporting means therefor. Asmall cam 49 (see Figs. 3 and '5) is rotatwalls 6 and 7 and is actuable by operating arm (see Fig. 1) attached to its shaft. The arm and wall 6 have co-acting knobs and depressions to retain the cam in adjusted position; The pur pose of the cam is to vary the size of a stitch .as will appear hereinafter.

1 Supporting member 1 also functions 7' through the'medium of walls 6 and 7 to adblock is also .justably support the cutting device assembly, designated generally by reference character.

28 and illustrated indetail in Figs. 6 to 8. As shown in Fig. 3, walls 6 and 7 are slotted at their upper ends as at 29, the purpose of the.

slotsbeing to slidably receive and support thecutting device assembly. This assembly comprises a supporting block 30 havingop-' posed guide portions 31' which are normally dispos d withinslots 2910f walls 6 and 7 and adapted to slide therein. The supporting formed to provide an extending threaded stud portion 32 for; receiving a of'which will be An adjustable screw 51 is centrally carried by block 30 and 12 threadedly carries a' serves as a stop to vary the size of the stitch taken, as will, appear later. An extending.

ear 34 of the supporting block pivotally carries a link 35 which is bifurcated at its upper end to embrace ear 34. At the lower end of link 35, the cutting device support 36 is pivotally mounted.

The cutting device 37, which constitutes an important feature of the invention, is adapted for removable mounting upon sup-- port 36. A loop holder 38 comprising sup port assembly 39 and pointed needles 52 is resiliently carried by support 36. Assembly 39 comprises. an L-shaped arm 53 and a spring 54. These elements are attached to support 36 at 55. A pin 56 carried by spring 54extends throughapertures in arm 53, device 37, and support 36 to normally lock the cutting device in place. 1 r

The cutting device comprises a pair of scissor-like blades 40,having opposed sharp edges 41, and a supporting sleeve 42 which surrounds and firmly embraces the blades. Hole 43 provided in the lower portion of the cutting device is adapted to receive pin 56 when the cutting device is mounted in cooperative relation upon support 36. It willbe apparent that by flexing spring 54 the cutting device may be readily mounted or removed for any purpose. A spring 44, which preferably takes the form illustrated inFig. 6, has one end'attached to supporting block 30, as at 45, and its other end slidably engages support 36, as at 46.

Referring now to Fig. 3, it will be apparent that with the cutting device assembly just described mounted properly for slidable action the adjusting nut 33 bears against the outer edges of walls 6 and 7 to maintain the assembly in adjusted position. 1 7

It will also be noted that by virtue of the arrangement of elements constituting the cutting device assembly, as illustrated clearly in Figs. 3 and6 and as described above,

cutting device 37 and loop holder 38 are free to move transversely with respect to their supporting block 30 and the cutting device is urged continually into engagement with loop former 4 by spring 44.

Considering'now the operation of the device as a whole, and assuming that itis desiredto merely form loops, then the cutting device assembly may be moved into inoperative position, as shown in Figs. 1 and 2. In Fig. 1, the device is illustrated in cooperative relation with fabric 47 and the loops are shown at 48. Several formed loops are shown and the needle is shown just after'having taken a stitch. Byjvirtue of the peculiar designof the needle, as. explained above, the yarn-lie's'in the channel formed on one side of the needle. In operation, the device is p sitioned adjacent one side of the fabric, as illustrated, an'd'the needle is pushed through thef'abric, carrying with itithematerial with which it is threaded. The device is now in the condition'illustratediin Fig. 1. Cam fol lower 23 has-been actuatedto force the loop former "against the needle: f The supporting member-Sis now movedtoward the fabric means of handle 13-. ThGlOOPi former 4 isthus moved forward by its supporting member andrides'along the channel of the needle, to ltheeye thereof to pick up the material and form-theloop. The needle is now withdrawn and cam follower 24: is engaged by the upper end of spring 25, as illustrated in Fig. 3,"to oscillatetthe loop former relative to the needle. Since the loop former is held stationary, the needle is moved away from the loop former at the moment that the needle subsequent backward movement of support- 'ingmember 3 withdraws the loop former from the fabric. Asits cam follower 23 engagesthelowerendof spring 25, the loop formeris'again moved into engagement with the needle so as to be readyto pick up the nextstitch in the same manner as just described. Since the cutting device is in inoperative position, it is ineffective to out the loops and merely rests against the lower portion of the loop former. Because of its 1noperative position, this device does not enter the fabric. It is important to note however at this time that either screw 51 or cam 4:9 or both may be used to limit the oscillatory movement of the loop former and thus limit the size of the stitch taken. The end of screw 51 serves as a stop against which link 35 abuts and since the cutting device assembly oscillates with the loop former, the size of the stitch may be varied by moving screw 51 in or out. Likewise cam 49 may be rotated to adjustably limit the oscillatory movement of the loop former.

Assume now that it is desired to cut the loops that are formed by the device after the forming thereof in the manner just described; "Inz'such. case, the cutting. device assembly is move'dintooperative position as illustrated in-Fig. This results, of course, in the movingforward'of the cutting device and the loop holder; The device is now operated in the manner described above to formwsuccessive loops, the needle and loop former operating in. the manner described.

Since the cutting device is carried upon walls 6 and7, thisdevi'ce is moved with vsupportingmember: :1 in the same manner as, is needle 2. H The cuttingdevice, rests against the loop fo'rmeruandride's in the channel thereof except whenthecutting device is in the fabric and the loop formeniswithdrawn. NVhen the loop'former is in its extended position, as

shown inFig. 3,"to form a'loopymovement I of the supportingmember 1 to insert the needle'through the fabric to take the next stitch causes forwardumovement also of the cutting device which rides along the loop former and shears or severs the loop. at'its central point. At the same time, the pointed needles 5210f the loop holder which liebetween the widened channel walls of the loop form-errengage thematerial and. fabric as at 57 (see Fig. to 'prevent'slipping 'of the loop by pulling-of the cutting; device. Obviously, the loop. holder thus keeps the pile even. Subsequent withdrawal oftheneedle from the fabric results also in the with clrawal of the cutting device therefrom. This cooperativerelation of the elementsgof the device causes successive formation of loops and the cutting'thereof, as illustrated in Fig. 3. "The severed loops constitute the pile which it is desiredto form on the fabric.

It will be apparent TIOIIlJtlIGzPIQSGIltCllS- closure that a device embodying the various features set forth indetail ishigh'ly efficient in performing itsintended function. Since the'parts'are relatively simple, therev is little likelihood that'the device will get out of order, and "theo'n'ly" appreciable Wear is upon the cutting device which tends to become 1 dull after long periods ofuse. By-virtue of 'the'novel construction of the cutting device assembly, however, the cutting device may be readily removed, as described above, without in; any way dismantling the device.

The parts are so designed that ready access is had} to -'the cutting-device for removal.

Other desirable features will be apparentto those skilled in the arts It will be understood that-various changes and modificationsinthevarious details: of

the device *are possible and-are 'contemplated by'the'invention The purpose ofthe presing' a pair of relatively 'slidable supporting 5 members, a stationary needle carried by one of said members, a loop former pivotally carried by the other of said members, a cam follower on said loop former oneach side of the pivot point thereof, and spaced cams on said one member adapted to engage said cam followers to actuate said loop former'in relation to said needle as said members are relatively moved. 1

2. A device of the class described, comprising a pair ofrelatively slidable supporting members, a stationary needlecarried by one of said members, a loop former pivotally carried by the other of said members,-a cam follower on said loop former on each side of the pivot point thereof, and a leaf spring on said one member having cam-like ends adapted to engage said cam followers to pivotally actuate said loop former in relation to said needle as said members are relatively moved.

3. A device of the class described for forming and cutting loops, comprising a pair of relatively movable supporting members, a stationary needle carried by one of said members, an oscillatory loop former carried by the other of said members,'means for oscillating said 'loop formerin relation to said needle as said. members are relatively moved, and means for severing the formed loops.

4. A device of the class described for forming and cutting loops, comprising a pair of relatively movable supporting members, a stationary needle carried by one of said members, an oscillatory loop former carried by the other of said members, means for oscillating said loop former in relation to said .needle as said members are relatively moved,

means for severing the formed loops, and means for holding the loops simultaneously with the severing thereof.

5. A device as claimed in claim 3, said severing means comprising a cutting device resiliently supported in cooperative relation to said loop former, and means urging said device into contacting engagement with said loop former.

6. A device of the class described for forming and cutting loops, comprising a pair of relatively slidable supporting members, a sta tionary needle carried by one of said members, an oscillatory loop former carried by the other of said members, means for oscillating said loop former in relation to said needle as said members are relatively moved, wheresaid members are relatively moved, whereby said loop former'picks a stitch off the needle to form a loop,a cutting device adjustably carried by said one member and adapted to cut the formed loop when desired, and a loop lating said loop former inrelation' to said needle as said members are relatively moved,

whereby said loop former picks a stitch off the needle to form a loop, a cutting device adj ustably carried by said one member, and means urging said cutting device into engagement with said loop former to effect shearing of the formed loop by said device.

9. A device of the class described for forming and cutting loops, comprising a pair of relatively slidable supporting members, a stationary needle carried by one of said members,an oscillatory loop formercarried by the other of said members, means for oscillating said loop former in relation tosaid needle as said members are relatively moved, whereby said loop former'picks a stitch ofl the needle to form a loop, a cuttingdevice adjustably carried by said one member, means urging said cutting device into engagement with said loop former to effect shearing of the formed loop by said device, and means for holding the loop simultaneously with the severing thereof. I

10. In a device of the class described, a removable cutting device comprising a pair of scissor-like blades having oblique cutting edges, and means rigidly attaching said blades together with their cutting edges in opposed relation. i

JOHN H. HOWE.

by said loop former picks'a stitch "off the needle to form a loop, and a cutting device adjustably carried by-said one member and 7 said loop formerin relationto said needle as V 

